Switch to arrays for payload.out

Author: garamond

package.json

@@ -10,7 +10,7 @@
     "type": "git",
     "url": "https://github.com/bfanger/svelte-preprocess-react.git"
   },
-  "version": "2.1.2",
+  "version": "2.1.3",
   "license": "MIT",
   "type": "module",
   "scripts": {
@@ -69,8 +69,7 @@
     "postcss": "^8.5.6",
     "prettier": "^3.6.2",
     "prettier-plugin-svelte": "^3.4.0",
-    "react": "19.1.1",
-    "react-dom": "19.1.1",
+    "react": "^19.1.1",
     "react-youtube": "^10.1.0",
     "svelte-check": "^4.3.1",
     "svelte-youtube-lite": "~1.2.1",
@@ -89,7 +88,7 @@
   "peerDependencies": {
     "react": ">=16.8.0",
     "react-dom": ">=16.8.0",
-    "svelte": ">=5.0.0 <=5.36.7"
+    "svelte": ">=5.36.8"
   },
   "svelte": "./dist/index.js",
   "files": [

pnpm-lock.yaml

@@ -145,14 +145,19 @@ function single<P extends Record<string, any>>(
       if (server) {
         let html = "";
         if ($$payload) {
+          if (typeof $$payload.out === "string") {
+            throw new Error(
+              "Invalid $$payload, check if the svelte version is 5.36.8 or higher",
+            );
+          }
           const len = $$payload.out.length;
           (SvelteWrapper as any)($$payload, {
             SvelteComponent,
             nodeKey,
             props,
             react$children: children,
           });
-          html = $$payload.out.slice(len);
+          html = $$payload.out.slice(len).join("");
           $$payload.out = $$payload.out.slice(0, len);
         } else {
           if (children && !props.children) {